Andrew w



(No Model.)

A. W. STEIGER.

MECHANICAL MOVEMENT. No.- 442,404. Patented Dec. 9, 1890.

flZZw In men 021- UNITED STATES PATENT OFFICE.

ANDREXV \V. STEIGER, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TO THE YOST \VRITING MACHINE COMPANY, OF NE\V YORK, N. Y.

MECHANICAL MOVEMENT.

SPECIFICATION forming part of Letters Patent No. 442,484, dalel December 9, 1890.

Application filed July 11, 1890. Serial No. 358,405. (No model.)

To all 1071 0722 it may concern: driven wheel B is also preferably made of a Be it known that 1, ANDREW \V. STEIGER, circular plate which is notched or recessed at a citizen of the United States, and a resident its periphery, as shown at E E, and these of Bridgeport, in the county of Fair-field and notches are so shaped or outlined as to form 55 5 State of Connecticut, have invented certain two distinct portions-namely, a locking pornew and useful Improvements in Mechanical tion 9 and a gearing portion 6.

Movements, of which the following is a speci- In order that the studs or pins D of the fication. driving-wheel A may mesh into and effectu- My invent ion in mechanical movements really co-operate with the notches in the driven 6o lates especially to gearing or gear-wheels. wheel B, the two wheels A and B are so It consists, primarily, in constructing and mounted as to lap past or partly overlie each combining a driving and a driven gear-wheel, other. substantially as hereinafter described, so that The studs D in the wheel A are so spaced the driving-wheel shall be free to be turned and the notches Ein the wheel B are so formed 65 in either direction to rotate and apply power and divided into the two parts 6 and e as to or through the second or driven wheel, that during the rotation of the wheel A as one while at the same time the said driving-wheel stud D passes in through the portion e of a when at rest shall act as a detent or pawl or notch in the wheel B another stud will move stop to lock or prevent rotation of the second out through the portion (2 of, an adjacent 7o or driven wheel. notch, and the sides of these portions 6 of the My invention consists,further, in certain notches E are made circular with a radius features of construction and combinations equal to the radial distance of the out-er face of devices, all as will be hereinafter more of the studs D from the center of motion of fully described,and particularly pointed out the wheel A and with a center coincident 75 in the appended claims. with the center of said wheel A when the In the accompanying drawings, Figure 1 is above-described movement is taking place. a face View of a pair of gear-wheels con- When a stud D, through the rotation of the structed in accordance with my invention. wheel A, has reached the bottom of the part Fig. 2 is an edge view of the same Fig. 3 is e of the notch, the preceding stud will have 80 0 a partial face view of the same pair of wheels reached the outer edge of the adjacent preshown in a difierent position from thatin Fig. ceding notch, and the firstnamed stud may 1, a portion of the driven wheel being broken enter the gear portion e of the notch E and away. Fig. 4 shows apair of gear-wheels condrive or rotate the wheel B about its axis B structed according to my invention applied until by the rotation of the wheel A another 5 to wind the spring of the carriage-driving of the studs D is brought into position to en mechanism of a type-writing machine, and ter another notch E on the wheel B, and this Fig. 5 is a central vertical section taken will take place when the first-mentioned stud through the gear-wheels and spring drivinghas reached a point where it is about to pass drum at Fig. at. out of the gear portion e of its notch and into 9 Similar letters and figures of reference apthe locking part c thereof. By reason of the ply to corresponding parts in the several figcircular sides of the locking portions e of the ures of the drawings. notches E being concentric with the driving- A is the driving-wheel, and B the driven wheel A, the movements of the studs D wheel, and these two wheels are mounted,rethrough these parts will produce no motion 95 spectively, on the axles or shafts A and B. in the wheel B; but as soon as the entering The driving-wheel A is preferablyformed, stud has passed through its corresponding for reasons hereinafter set forth, of a circular locking portion c and enters the gear portion plate C,with laterally-projecting studs, cogs, c of the notch E a continued motion of the or pins D, set at a properly-determined diswheel A will cause the stud to act as a tooth I00 tance apart and at an equal radial distance or cog to turn the wheel B.

from the center of motion of the wheel. The From the above it willbe readily understood that if a reacting power be applied to the wheel B with a'tendency to rotate it in either directioirwhile the studs D are in the locking portions e of the notches E there will be no effect produced onthe wheel A to rotate it, and the wheel B will be prevented from turn- .ing, the studs D and the wheel A acting as a stop or detainer.

In Figs. 1 and 2 I have shown a weight F, attached to a rope or cord G, Which passes up over a drum H on the axle B of the wheel B. This Weight F has a tendency to rotate the wheel B about its axis; but by reason of the detaining action of the stud D and the wheel A thewheel B is held stationary and the weight F sustained. If, however, the two I wheels should be left in the relative position shown in Fig. 3 and the weight applied as in .Fig. 1, then the wheel B wouldturn about its axis just far enough to bring the studs D on the Wheel A into the portions cot their correspondin g notches E, and then the said wheel B would be looked, as in Fig. 1.

In Fig. 1, 1 is the top plate of a type-writing machine; 2, a paper-carriage mounted to slide thereon; 3, an escapement to give astepby-step movement to the carriage, which is drawn along by a cord 4 attached thereto at one end, the other end of the cord being attached to a spring-actuated drum 5, mounted on a bracket 6, fixed to the frame of the machine. v

011 the end of a spring-winding arbor 7, projecting outwardly through the bracket 6, is mounted a notched wheel B, corresponding with the driven wheel shown in Fig. 1, and above it on a stud projecting from the bracket 6 is mounted a gear-wheel A, correspending with the driving-wheel at Fig. 1. A thumb-wheel S is preferably attached to the wheel A, so that it may be easily rotated to act on the wheel B and cause the latter to wind or unwind the spring 9 in the drum 5 to increase or diminish the tension on the cord 4, and hence the feed of the carriage. By my invention no independent detent or pawl is necessary, as the wheels will lock themselves immediately on removal of the force or power applied to the driving-Wheel. This,it will be understood,is a great desideratum, as is that of being able to turn the driven wheel in either direction.

My invention may be used in clocks, hoisting and lowering apparatus, and in other machinery than type-writers.

The locking portions e, which are concentric with the axis of the wheel A, it will be observed,- are elongated or extended for the purpose of preventing any one of the cogs D from being thrown past the locking portions by the momentum or throw of the wheel A in case the latter should be released While the preceding cog D is in the gearing portion 6. It will be further observed that by the employment of the elongated concentric looking portions 6, leading into or communicating with the gearing portions 6', the wheel B and tions and communicating therewith, and formed or constructed with faces concentric with the driving-wheel, whereby the constantly-driven studs or cogs may pass from the locking portions into the gearing portions and intermittently turn said driven wheel, as

well as lock or check its rotation upon the removal of the power from the driving-wheel, substantially as setforth. 4 n

2. The combination of a step-by-step sliding carriage, a pulling-bancL'a spring-actu ated drum, wheel connected to said drum and having notches or recesses formed with locking and gearii'ig portions, and a wheel having studs or cogs adapted to engage with said locking and gearing port-ions of the notched wheel.

Signed at New York city, in the county of New Yorkand State of New York, this 8th day of July, A. D. 1890.

ANDRE\V W. S'IEIGER;

\Vitnesses:

J ACOB FELBEL, M. E. LEEs. 

